Revert "add test case for tidb"

This reverts commit f70d2cc3.

.travis.yml

@@ -9,10 +9,9 @@ services:
   - postgresql
   - memcached
 env:
-  - ORM_DRIVER=sqlite3  ORM_SOURCE=$TRAVIS_BUILD_DIR/orm_test.db
+  - ORM_DRIVER=sqlite3   ORM_SOURCE=$TRAVIS_BUILD_DIR/orm_test.db
   - ORM_DRIVER=mysql    ORM_SOURCE="root:@/orm_test?charset=utf8"
   - ORM_DRIVER=postgres ORM_SOURCE="user=postgres dbname=orm_test sslmode=disable"
-  - ORM_DRIVER=tidb     ORM_SOURCE="memory://test/test"
 install:
   - go get github.com/lib/pq
   - go get github.com/go-sql-driver/mysql
@@ -25,7 +24,6 @@ install:
   - go get github.com/couchbase/go-couchbase
   - go get github.com/siddontang/ledisdb/config
   - go get github.com/siddontang/ledisdb/ledis
-  - go get github.com/pingcap/tidb
 before_script:
   - sh -c "if [ '$ORM_DRIVER' = 'postgres' ]; then psql -c 'create database orm_test;' -U postgres; fi"
   - sh -c "if [ '$ORM_DRIVER' = 'mysql' ]; then mysql -u root -e 'create database orm_test;'; fi"

orm/models_test.go

@@ -25,7 +25,9 @@ import (
 	_ "github.com/go-sql-driver/mysql"
 	_ "github.com/lib/pq"
 	_ "github.com/mattn/go-sqlite3"
-	_ "github.com/pingcap/tidb"
+
+	// As tidb can't use go get, so disable the tidb testing now
+	// _ "github.com/pingcap/tidb"
 )
 
 // A slice string field.